CN102484527A

CN102484527A - Method of updating bs system information of a relay station in a broadband wireless access system

Info

Publication number: CN102484527A
Application number: CN201080037545XA
Authority: CN
Inventors: 赵嬉静; 柳麒善; 郑仁旭; 朴基源; 金龙浩; 陆昤洙
Original assignee: LG Electronics Inc
Current assignee: LG Electronics Inc
Priority date: 2009-08-24
Filing date: 2010-08-24
Publication date: 2012-05-30
Anticipated expiration: 2030-08-24
Also published as: KR20110020733A; US20110044233A1; CN102484527B; KR101618782B1; CA2772048C; EP2471195A2; CA2772048A1; WO2011025206A3; EP2471195A4; WO2011025206A2; US9520936B2

Abstract

A method for efficiently updating system information of a base station at a relay station of a broadband wireless access system and an apparatus for performing the method are disclosed. The method for updating system information of an advanced base station (ABS) at an advanced relay station (ARS) of a broadband wireless access system comprises receiving a first message, which includes changed information of the system information of the base station, from the base station; transmitting a second message for acknowledgment of the first message to the base station; and performing application for the changed information.

Description

In BWA, upgrade the method for the BS system information of relay station

Technical field

The present invention relates to BWA, and relate more specifically in relay station, to upgrade effectively method and the device that is used to carry out this method of the system information of base station.

Background technology

Be expected in the next generation wireless communication system and will use relay station (RS) widely.Hereinafter, relay station (RS) will briefly be described.

Since based on standard IEEE (Institute of Electrical and Electronics Engineers) 802.16-2004 of fixed-line subscriber mobile radio station and since being used to provide the ambulant standard IEEE 802.16e-2005 of user's mobile radio station to announce; In IEEE in 2006 802.16, new exercise question is called as current being among the development of standardization project of multi-hop relay.

After the official meeting first time in May, 2006, this standardization project of being handled by the task groups j among the IEEE 802.16 (IEEE 802.16j) has entered on using a model in the second session in July, 2006, relational term and technical need.Hereinafter, IEEE 802.16 task groups j will be abbreviated as " 802.16j ".

After a while the relay station notion of describing can be used with the relay station that the 3GPPLTE-A system is considered basically identically.And the relay station identical or similar functions of the execution in other various wireless access systems can use with the relay station described in the present invention similarly.

802.16j project authorized application (PAR) be intended to covering expansion and throughput enhancing as the standardization task that will carry out.

Can relay station be divided into two types relay station, that is, and transparent relay stations and nontransparent relay station.According to transparent relay stations, whole operation and functions are all carried out in relay station, and mobile radio station is managed by relay station.On the other hand, according to nontransparent relay station, whole operations and function are all carried out between macro base station and mobile radio station.In this case, nontransparent relay station is used for carrying out its relay function through the macro base station between macro base station and the mobile radio station.

Mobile radio station is regarded transparent relay stations and nontransparent relay station as a macro base station, and and nonrecognition transparent relay stations and nontransparent relay station.In this case, though in operation, do not change, mobile radio station can sort out relay station from macro base station.

The network that comprises relay station comprises base station (BS), relay station (RS) and mobile radio station (MS).Even mobile radio station also can receive radio signals through relay station in the cell area outside of base station.And, can be the high-quality path that the mobile radio station setting in the cell area of base station has senior adaptive modulation and coding (AMC) scheme through relay station.Correspondingly, through using identical Radio Resource, the user can obtain the advantage that throughput of system strengthens.

To have predetermined demand by the standard that the 802.16j project is formulated.For example, the mobile radio station of realizing based on existing 802.16-2004 and 802.16e-2005 should be carried out and the communicating by letter of relay station, and does not have any additional function.Correspondingly, can be according to this mode of some functions that are used to control relay station being added to relay station and existing base station, the range of application of relay station is restricted to existing system.The standard of expection relay station will become standardized central factor.

The user's mobile radio station that can relay station be used as the operation of carrying out physical layer and medium access control (MAC) layer.And relay station still can have the expectant control function if necessary mainly by base stations control.Except fixing relay station,, can consider various types of relay stations as using a model of current discussion.The example of relay station comprises and is used for to the specific region mobile-relay station of service and the relay station that can be built in vehicle or subway being provided temporarily.

After a while the technical problem underlying of discussing can be described as as follows:

1) is used for discerning the relay station that is present in the base station and obtain and keep process about the information of the topology that contains relay station;

2) definition of the physical transfer frame structure between mobile radio station and the relay station, it has and the backwards compatibility that has IEEE 802.16 systems now;

3) be used to provide between the relay station or relay station and base station between ambulant signal process; And

4) relay station arrives the network entering process of base station and the entering process that mobile radio station passes through relay station.

Exchanges data is all carried out in relay station and mobile radio station and base station.Yet, because relay station and base station synchronization, so relay station and base station while broadcast system information.Correspondingly, when the base station broadcast system information, relay station is broadcasted its system information according to transmission mode.In this case, the problem that is occurred is that relay station can not receive the system information of base station.And as discussed above, relay station has the interval that is used for receiving from the base station data.In this respect, needs are used for the method to mobile radio station and this interval of subordinate relay report.

Summary of the invention

Technical problem

The present invention is directed to a kind of method of the system information of in relay station, upgrading the base station effectively and the device that is used to carry out this method, it has eliminated one or more problem that is caused by the restriction of correlation technique and shortcoming basically.

An object of the present invention is to provide a kind of method and the device that is used to carry out this method of system information of change of in relay station, obtaining the base station effectively.

Another object of the present invention provides a kind of method of system information of sending the extra needs of relay station to mobile radio station and subordinate relay effectively and the device that is used to carry out this method.

Attendant advantages of the present invention, purpose and characteristic will partly provide in the description of back, and for those of ordinary skills, will after the following content of examination, partly become clearly, perhaps can be to knowing the practice of the present invention.The object of the invention and other advantage can be realized and obtained by the structure that from printed instructions and claims and accompanying drawing, particularly points out.

Solution

In order to realize these purposes and other advantage; And according to the object of the invention; Concrete and wide in range description like this paper; A kind of method that is used for locating to upgrade at the senior relay station (ARS) of BWA the system information of senior base station (ABS) may further comprise the steps: receive first message from this base station, this first message comprises the information of change of the system information of this base station; Send to the base station and to be used for second message that first message is confirmed; And execution is to the application of the information of change.

In this case; This system information comprises that first son divides into groups, second son divides into groups and the 3rd son divides into groups, and the information that changes comprise the change counting of indication mechanism information the change count area, indicate each sub-packet whether be updated to 1 bit bitmap field and with bitmap field in be set to the lastest imformation that ' 1 ' the corresponding son of bit divides into groups.

And; The lastest imformation of each sub-packet comprises the Hyper Frame Number action field in the units of super-frames; The time of the lastest imformation that corresponding son divides into groups is used in the indication of this Hyper Frame Number action field, and the step of carrying out the application of the information that changes is to divide into groups to carry out according to son at the indicated time place of Hyper Frame Number action field.

In another aspect of this invention; A kind ofly be used for that (ABS) may further comprise the steps to the method for the change of senior relay station (ARS) reporting system information from senior base station at BWA: send first message to this relay station, this first message comprises the information of change of the system information of this base station; And receive from relay station and to be used for second message that first message is confirmed.

In this case; This system information comprises that first son divides into groups, second son divides into groups and the 3rd son divides into groups; And the information that changes comprise the change counting of indication mechanism information the change count area, indicate each sub-packet whether be updated to 1 bit bitmap field and with bitmap field in be set to the lastest imformation that ' 1 ' the corresponding son of bit divides into groups; And the lastest imformation of each sub-packet comprises the Hyper Frame Number action field in the units of super-frames, and the time of the lastest imformation of corresponding son grouping is used in its indication.

And this method also comprises: if do not receive second message from relay station, then resend first message to said relay station.

Of the present invention other aspect in, a kind of senior relay station (ARS) that in BWA, moves comprising: processor; And radio frequency (RF) module; This RF module receives radio signals to outside transmission radio signal and from the outside under the control of processor; Wherein, First message that processor receives through from senior base station (ABS) is obtained the information of change of the system information of this base station, come to send to the base station through control RF module to be used for second message that first message is confirmed, and control RF module is carried out the application to the information that changes.

And; The lastest imformation of each sub-packet comprises the Hyper Frame Number action field in the units of super-frames; The time of the lastest imformation that corresponding son divides into groups is used in the indication of this Hyper Frame Number action field, and the step of carrying out the application of the information that changes is to carry out according to each sub-packet at the indicated time place of Hyper Frame Number action field.

In aspect above, preferably, when changing system information, come to send first message from the base station according to the Event triggered pattern.

Preferably, aspect above in, first message is necessary system information (RS_ESI) message of relay station, and second message is ACK (AAI_MSG-ACK) message.

Beneficial effect

According to the embodiment of the present invention, can obtain following advantage:

At first, relay station can obtain the system information of the change of base station through necessary system information, and uses the system information of being obtained when wanting application system information in the base station.

In addition, can the system information (for example area information and hop-information) of the extra needs of relay station be sent to mobile radio station effectively.

Should be understood that above general description of the present invention and following detailed description all are exemplary and indicative, and aim to provide further explanation invention required for protection.

Description of drawings

Accompanying drawing is included providing further understanding of the present invention, and a part that is merged in the application and constitutes the application, and accompanying drawing shows execution mode of the present invention, and is used to explain principle of the present invention with specification.In the accompanying drawings:

Fig. 1 shows the figure of frame structure of FDD (FDD) pattern of the general IEEE 802.16m of the basis system of relay station and base station;

Fig. 2 shows the figure of frame structure of time division duplex (TDD) pattern of the general IEEE 802.16m of the basis system of relay station and base station;

Fig. 3 shows the figure according to the example of the area information that passes through mapping (map) regional forecast relay station of one embodiment of the present invention;

Fig. 4 shows the figure according to another example of the area information that passes through mapping area report relay station of one embodiment of the present invention;

Fig. 5 shows the figure of example of the network arrangement of base station and subordinate relay;

Fig. 6 shows the figure of the process example of the system information of in relay station, upgrading the base station of another execution mode according to the present invention;

Fig. 7 shows the figure of method example of configuration relay station identifier and the multicast identifier of another execution mode according to the present invention; And

Fig. 8 shows the block diagram of the example of the transmitter and receiver of another execution mode according to the present invention.

Embodiment

Now will be in detail with reference to preferred implementation of the present invention, the example of these preferred implementations shown in the drawings.As long as under the possible situation, will run through accompanying drawing and use identical reference number to represent same or analogous parts.

The present invention relates to wireless access system.Hereinafter, execution mode of the present invention discloses the method for the system information of transmission/renewal relay station effectively.

Below execution mode be to realize by the combination of structural element of the present invention and characteristic with predefined type.Should optionally consider each in these structural elements or the characteristic, only if indicate individually.Can carry out each in these structural elements or the characteristic, and need not to make up with other structural element or characteristic.And some structural elements and/or characteristic can combinations with one another, to constitute execution mode of the present invention.The operating sequence of describing in the embodiment of the present invention can change.Some structural elements or characteristic in execution mode can comprise in another embodiment, perhaps can substitute with corresponding construction element or the characteristic in another execution mode.

Execution mode of the present invention has been described based on transmission of the data between base station and the mobile radio station and reception.In this case, the terminal node of network is represented in the base station, and it carries out the direct communication with mobile radio station.Be described to according to circumstances to carry out by the upper layer node of base station by the specific operation that carry out the base station.

In other words, will be clear that, for the network that comprises base station and a plurality of network nodes in mobile radio station communicate performed various operations and can carry out by other network node beyond base station or the base station.Can use the term such as fixed station, NodeB, eNodeB (eNB), access point (AP) and senior BS (ABS) to replace base station (BS).

And, can use the term such as subscriber equipment (UE), mobile subscriber station (MSS), senior MS (AMS), mobile subscriber station (MSS) and portable terminal (MT) to replace mobile radio station.

Can realize in various manners according to the embodiment of the present invention, for example hardware, firmware, software or their combination.If be with hard-wired according to the embodiment of the present invention, execution mode then of the present invention can use one or more application-specific integrated circuit (ASIC) (ASIC), digital signal processor (DSP), digital signal processing appts (DSPD), programmable logic device (PLD), field programmable gate array (FPGA), processor, controller, microcontroller, microprocessor to wait and realize.

If realize with firmware or software according to the embodiment of the present invention, then the method according to embodiment of the present invention can realize with one type module, program or function carrying out above-described function or operation.For example, software code can be stored in the memory cell, and can be driven by processor subsequently.Memory cell can be positioned at the inside or the outside of processor, to come receiving data to processor transmission data and from processor through known variety of way.

Disclosed standard document can be supported execution mode of the present invention in the wireless access system (that is, IEEE 802 systems, 3GPP system, 3GPP LTE system and 3GPP2 system) at least one.That is, in embodiments of the present invention, clear and the step that is not described or part can be by top standard document supports in order to make technical characterictic of the present invention.And all terms disclosed herein can be described by above standard document.Especially, one or more standard document of IEEE 802.16 systems (that is, P802.16e-2004, P802.16e-2005, P802.16Rev2 and IEEE P802.16m) can be supported execution mode of the present invention.

The employed in embodiments of the present invention concrete term of hereinafter is provided for to assist understands the present invention, and in the scope that does not break away from technical spirit of the present invention, can carry out various modifications aspect the concrete term.

Hereinafter, description is applied to comprise the following hypothesis according to the BWA of the relay station of embodiment of the present invention:

1) relay station and macro base station are synchronous;

2) even mobile radio station obtains service from relay station, mobile radio station also be with the corresponding relay station under macro base station synchronous;

3) under the situation of transparent relay stations (RS), medium access control (MAC) administrative messag is only to send to mobile radio station by macro base station or by macro base station through relay station;

4) relay station can have calculating code division multiple access (CDMA) coded signal metrical information or channel condition information (CQI) metrical information function to carry out physics control; And

5) can be with centralized scheduling pattern or the scheduling of distributed scheduling pattern configurations.

In embodiments of the present invention, can basis senior relay station (ARS) be divided into the ARS of odd number of hops and the ARS that even number is jumped with the jumping (hop) of ABS is several.The ARS that the ARS of odd number of hops and even number are jumped can have hierarchy, and a network can comprise the ARS of one or more odd number of hops and the ARS that one or more even number is jumped.

The frame structure that in relay station, uses can comprise downlink frame structure and uplink frame structure.At this moment, the downlink frame structure comprises that down link (DL) inserts zone and downlink relay zone, and the uplink frame structure comprises that up link (UL) inserts zone and uplink relay zone.

In this case; If there is a relay station (jumps structure) between base station and the mobile radio station; Down link inserts region representation ARS and sends the interval of packet etc. to AMS so, and up link inserts region representation AMS sends interval from packet etc. to ARS.And ARS can receive packet from ABS in the downlink relay zone, and can send packet to ABS in the uplink relay zone.

The frame structure of the relay station in this jumping structure has been shown in Fig. 1 and Fig. 2.

The frame structure of FDD (FDD) pattern of the general IEEE 802.16m of the basis that illustrates relay station and the base station system of Fig. 1, and the frame structure of time division duplex (TDD) pattern of the general IEEE802.16m of the basis that illustrates relay station and the base station system of Fig. 2.

In Fig. 1, notice that up link and down link are identified by frequency and access zone, and four sub-frame are distributed in the interior relaying zone of frame respectively.And, in Fig. 2, notice, up link and down link by the time-division with insert the zone and identify, and in up link and down link each, the relaying zone is identified by the time-division once more.In Fig. 1 and Fig. 2, between each zone, exist to be used for gap that corresponding zone is shifted.

In aforementioned frame structure, relay station ARS can insert zone passage super-frame header (SFH) at down link and broadcast its system information.And relay station can send by the system information of forming with the identical field of field of the SFH that sends from the base station.At this moment, the value of field can be different with the value of sending from the base station.Yet the identifier field of relay station (that is BSID field) comprises its BS identifier rather than RS identifier.This is because needs is BS identifier rather than RS identifier during the handoff procedure of mobile radio station.

Except the system information through SFH broadcasting, relay station also comprises the obsolete additional system information of base station ABS.The example of additional system information comprises the position in the gap that access zone and relaying zone and each of indication up link and down link exists between regional and/or the information of size.

The method that is used for sending effectively to mobile radio station or subordinate relay the additional system information of relay station according to one embodiment of the present invention will be described below.

First execution mode

According to an embodiment of the invention, a kind of method that is used for sending effectively to mobile radio station or subordinate relay the additional system information of relay station is provided.

At first, with the method for describing according to one embodiment of the present invention of each regional information that is used to report down link.

Should report that the reason of each regional information of down link is to mobile radio station or subordinate relay, mobile radio station or subordinate relay maybe be with the data (in fact data possibly be noise or interference) of the data identification of sending to corresponding relay station from the base station for its.And if subordinate relay is known the data that send to it or the transmission region of signaling, subordinate relay just needn't read the A-MAP information in the unnecessary zone so.

In this respect, this execution mode has proposed to be used for the method for the A-MAP regional forecast downlink/uplink area information (relay area domain information and access area information) through downlink subframe.To this method be described with reference to figure 3 and Fig. 4.

Fig. 3 illustrates according to the example of one embodiment of the present invention through the area information of mapping area report relay station.

Comprise the information in type, length and gap and about the information in next regional type, length and gap with reference to the A-MAP zone of figure 3, the first descending sub frames about current region.The A-MAP zone of the subframe of next zone beginning comprises the information in type, length and gap about respective regions and about the information in next regional type, length and gap.In this way; If relay station in next location of current region with receiving mode (for example; The downlink relay zone) work; So mobile radio station or subordinate relay can identify the signal in the respective regions be not to himself, and can after finish in next zone, receive the signal of corresponding relay station.

Though Fig. 3 only shows descending sub frame, can be included in the corresponding up link A-MAP zone about the information of uplink region.

Fig. 4 illustrates according to one embodiment of the present invention another example through the area information of mapping area report relay station.

With reference to figure 4, the information in the zone under corresponding subframe, the A-MAP zone that each area information in the respective superframe and gap information also can send to first descending sub frame.In this case, if mobile radio station or subordinate relay have successfully received the A-MAP zone of first subframe, so just do not need next regional additional information.

Simultaneously, each regional area information and gap information can be sent through the A-MAP zone of each sub-frame.

Except the A-MAP zone of each sub-frame, the SFH that area information that each is regional and gap information can also be through sending necessary system information or be used to transmits the AAI_SCD message of additional system information and sends.At this moment, the network that subordinate relay should not accepted its subordinate relay and mobile radio station gets into, till it receives area information and gap information.

Next, with the method for describing according to embodiment of the present invention that is used to send hop-information (odd number of hops or even number are jumped), hop count and relay station identifier.Will with reference to figure 5 describe between base station and the relay station and relay station and another relay station between relation.

The example of the network arrangement that illustrates base station and subordinate relay of Fig. 5.

Hypothetical network arranges as shown in Figure 5, can hop-information be divided into hop-information and the hop-information between relay station and another relay station between base station and the relay station.

1) between ABS and ARS 1 or ABS and ARS 2 between relation in, when ARS 1 or ARS 2 implicitly determined its hop-information or get into ABS, ABS can be an odd number of hops through MAC administrative messag report corresponding relay station.

2) in the relation between ARS 1/2 and ARS 3/4; When ARS 1/2 broadcasts its hop-information through SFH; ARS 3/4 implicitly determines its hop-information; Perhaps when ARS 3/4 got into ARS 1/2, ARS 1/2 can make ARS 3/4 implicitly determine hop-information to the hop-information of ARS 3/4 this ARS 1/2 of report, perhaps can directly report hop-information through MAC message.This is because ARS 1/2 knows that its ARS 3/4 that belongs to odd number of hops and be equivalent to the subordinate relay of ARS 1/2 belongs to even number and jumps.

Be similar to preceding method, can be through coming to relay station report hop count during the entering process from the SFH of upper layer entity (being base station or superordinate relay stations) broadcasting or through MAC message.If use SFH, relay station can add the hop count that 1 mode is implicitly determined this relay station according to the hop count with its upper layer entity so.And if use MAC message, upper layer entity can perhaps can directly be reported the hop count of subordinate relay according to the hop count of the mode identical with SFH to subordinate's this upper layer entity of entity report so.

Simultaneously, relay station identifier representes to be used to identify the identifier of the relation (for example, the relation between ARS 1 and the ARS 3/AMS 1) between relay station and another relay station/other mobile radio station.Relay station identifier can be the unique identifiers from base station assigns.In this case, unique identifiers can be station identifier (STID).In order to transmit this identifier, can be in the method that is used for when relay station gets into the base station distributing relay station identifier between the relay station of base station and odd number of hops through the MAC administrative messag.And, can be used for when subordinate relay gets into superordinate relay stations, transmitting the method for coming to transmit this relay station identifier from the relay station identifier of base station assigns or through the MAC administrative messag to subordinate relay from superordinate relay stations between superordinate relay stations and the subordinate relay to subordinate relay through super-frame header.

Simultaneously, according to a further aspect in the invention, a kind of method that is used for receiving effectively at the relay station of BWA the additional broadcast information of base station is provided.At first, additional broadcast information will be described.

Usually, in order to communicate with mobile radio station, the base station is transmitted additional broadcast information (ABI) to mobile radio station with a kind of additional broadcast message (for example, AAI_SCD, AAI_NBR-ADV, AAI_PAG-ADV, AAI_MC-ADV etc.).At this moment, transmit additional broadcast message through Traffic Channel, general user data sends through this Traffic Channel.ABI comprises system parameters, the system configuration information of expansion and the control information of notifying to DL.

The information that system obtains needed ABI is following.

-the information that is used to switch: default HO RSSI and CINR mean parameter, hysteresis margin, duration in triggered time, trigger message

-be used for the information of MIMO: be used for the codebook subset that PMI coordinates, the codebook subset that is used for the indication of DL MU-MIMO subclass

-be used for relayed information: hop-information, DL/UL distribution, transmission/receiving area, area type

-be used for the information of multicarrier: carrier index, the fully/carrier wave indication of part configuration, centre frequency, bandwidth information, initial access capability, protection resource information

-be used for the information of Femto cell

-be used for the information of EMBS: service ID, MSCCH resource allocation information

-being used for the information between RAT: the MIH ability is supported

-be used for the information of neighbor advertisement: the characteristic of neighbours BS

-the control and the signaling information that can in DL, send, with when being in the free time and the unique user of sleep pattern or user's group the network notice is provided.

The base station is inserted the zone to down link usually and is transmitted additional broadcast message (that is, transmission mode), and wherein additional broadcast message comprises aforementioned additional broadcast information.At this moment, when work in down link access zone in the base station, relay station is also worked in the TX pattern.Correspondingly, need when changing additional broadcast information, in relay station, receive the method for the additional broadcast information (ABI) of base station effectively.Hereinafter, with the method that is used for receiving effectively the ABI of base station of describing another execution mode at relay station according to the present invention.

Method 1

Additional broadcast message can be sent through the downlink relay zone extraly in base station (or superordinate relay stations).At this moment, only when changing ABI, base station (or subordinate relay) can be sent the message of the information that comprises change to down link middle rank zone.

Method 2

Additional broadcast message can only be sent through the downlink relay zone in base station (or superordinate relay stations).

Method 3

Relay station (or subordinate relay) can be to the change counting of base station (or superordinate relay stations) report ABI and SFH.If corresponding relay station (or subordinate relay) do not comprise the system information of latest edition, a message is sent to the corresponding relay station in the base station (or superordinate relay stations) that has then received this change counting, and wherein this message comprises corresponding system information.

Method 4

Base station (or superordinate relay stations) can be sent the change counting of ABI and SFH termly to relay station (or subordinate relay).Confirm that the system information newer than the system information of this relay station is sent out/uses if received the relay station (or subordinate relay) of this change counting, then it can ask the information about the message that comprises corresponding system information.

In preceding method, base station (or superordinate relay stations) can seek relay station (or subordinate relay) to relay station (or subordinate relay) and whether receive corresponding message.

Second execution mode

According to another embodiment of the present invention, if the changing system information of base station, then provide a kind of being used for to receive system information that changes and the method for upgrading the system information of this change effectively at relay station.

As stated, exchanges data is all carried out in relay station and mobile radio station and base station.Yet, because relay station and base station are synchronous, so relay station and base station are the system informations of broadcasting them simultaneously.Correspondingly, relay station is according to the system information of this relay station of the broadcasting of the transmission mode when the base station broadcast system information.In this case, the problem that is occurred is that relay station can not receive the system information of base station, and relay station can not updating system information thus.In superordinate relay stations and subordinate relay also this problem can appear.

Correspondingly, in this embodiment, define independent MAC administrative messag, and the system information of the change of relay station reception base station or superordinate relay stations, to upgrade the system information that changes.

The system information of in the base station, upgrading can be called necessary system information (ESI).Necessary system information is normally sent through time super-frame header (S-SFH), and can divided into groups 1 to identify to son grouping 3 (that is, S-SFH SP1, S-SFH SP2 and S-SFH SP3) by son.This a little grouping can have the different transmission period each other, and can be upgraded individually by the base station.

Relay station can change counting through SFH and confirm whether the system information of base station (or superordinate relay stations) has changed.Can change counting to the SFH that relay station (or subordinate relay) sends base station (or superordinate relay stations) through senior MAP (A-MAP) zone.At this moment, the transmission region of SFH change counting can right and wrong user reserved area (or non-user's reserved area of expansion) or user's reserved area.Simultaneously, except SFH changed count information, the MAP zone can also comprise the transmission of location information of the system information of sending separately to subordinate relay.If transmission of location information is included in the A-MAP zone, then subordinate relay can identify corresponding information whether change has taken place, and if corresponding information changed, can attempt upgrading.

1) transport-type of MAC message

The type of MAC message (hereinafter referred to as " the necessary system information of relay station " or " RS_ESI message ") of system information that is used for sending to subordinate relay the change of base station can be the type of broadcast or additional broadcast message.And, considering channel status etc., ARS divides into groups to relay station, and gives a multicast ID for identical group.In this way, the type of MAC message can be the type of the multicast message that sends to the relay station with corresponding ID or the type of unicast messages.

Different with general MAC administrative messag, corresponding message can not comprise and encryption and security related information.

2) type of MAC message

Simultaneously; The RS_ESI type of message can be to comprise in whole SFH in the type of message of system information and send, perhaps can send as follows: send system information and the system information in each S-SFH SP in the P-SFH according to each type of message.And MAC message can indicate it whether to comprise each sub-packet through using bitmap, perhaps can indicate it to comprise that only having the son of setting bit divides into groups.For example, if 4 bits of bitmap indication can with each Bit Allocation in Discrete be the information in the 1st bit: the P-SFH in a like fashion; The 2nd bit: the information in the S-SFH SP1; The 3rd bit: the information in the S-SFH SP2; And the 4th bit: the information in the S-SFH SP3.Yet, because P-SFH seldom is associated with necessary system information, so after bitmap being set at 3 bits, can antithetical phrase divide into groups 1 to distribute to 3.And preferably, the MAC message that is used for system information transmissions comprises count information, and this count information is the SFH version information.

The system information that will be sent out at this moment, can be configured to not comprise unaltered information and the unnecessary information such as BS ID.

3) transmit timing of MAC message

As long as in the base station, there is at least one relay station, corresponding message just should be sent to relay station in following transmit timing in the base station.

The transmit timing of RS_ESI message can have periodically, and its transmission period can be independent of or be equal to the base station SFH each sub-packet period (N * PS-SFH SPx, N >=1) and be set up.At this moment, schedule information can be reported in the base station during network gets into, for example the transmission location of RS-ESI message and period information.And the transmit timing of RS-ESI message can a requirement restriction by relay station.According to another transmit timing of RS_ESI message, under the situation of changing system information, can come from the base station transmission RS_ESI message according to the Event triggered pattern.At this moment, whether relay station can receive corresponding message to the base station report.

In order whether to have received RS_ESI message to base station report, relay station can use header or the MAC message such as MR_Gereric-ACK or AAI_MSG-ACK such as message ACK extension header (MAEH).If do not receive message to message ACK from specific relay station, perhaps receive the message of Indication message NACK from relay station, then the base station can only resend this message to the corresponding relay station.

The application of the system information of 4) upgrading regularly

Relay station can be directly be applied to corresponding superframe (in this superframe, receiving RS_ESI message) with the system information of renewal included in the RS_ESI message, perhaps can confirm the frame or the superframe that will the system information of upgrading be applied in advance.And, can be included among whole sons included in the RS_ESI message divide into groups about using information regularly, thus, this information can be applied to simultaneously all that son divides into groups.And the application information regularly of dividing into groups about every son can be included in the RS_ESI message, uses regularly thus and can change according to each sub-packet.Can in units of super-frames, set should be regularly.

Following table 1 shows the example of the RS_ESI message of another execution mode according to the present invention.

Table 1

Reference table 1 can be through indicating the system information of the renewal of base station to the bitmap field (S-SFH information bitmap) of sub 3 bits that divide into groups, this system information is included in the RS_ESI message.At this moment, (0b10:SP3) the bitmap type (S-SFH information bitmap) of alternative 3 bits is indicated the system information of the renewal of base station included in the RS_ESI message for 0b00:SP1,0b01:SP2 can to use type.

And inferior super-frame header counting (S-SFH changes counting) can be included in the system information, with the S-SFH counting of indication corresponding message.Simultaneously, RS_ESI message can comprise the Hyper Frame Number action field in the units of super-frames, uses the time of system information (that is each sub-packet) included in the corresponding message in order to indication.

Following table 2 shows another example of the RS_ESI message of another execution mode according to the present invention.

Table 2

Table 2 is identical with table 1 basically.Yet in table 2, the Hyper Frame Number action field is included in each sub-packet, uses regularly thus and can change according to each sub-packet.

The RS_ESI message that comprises the information shown in table 1 and the table 2 can also comprise that indication is used to send MAC message (for example AAI_MSG-ACK message) and the information of the ascending resource that distributes (for example; Time shaft position of the size of the resource that the frequency axis of the resource of being distributed begins to squint, distributed, the resource of being distributed or the like), be used to identify corresponding message and whether received by the relay station of the extra RS_ESI of receiving message.At this moment, the allocation order that can confirm ascending resource through the ascending order or the descending of RSID value.

The example of the detailed applications of aforementioned RS_ESI message will be described with reference to figure 6.

The procedural example of in relay station, upgrading the system information of base station that illustrates another execution mode of Fig. 6 according to the present invention.

In Fig. 6, suppose the RS_ESI form shown in the use table 2, and supposition RS_ESI message is based on the condition that the system information of base station is updated and sends according to the Event triggered pattern.And the supposition relay station uses AAI_MSG-ACK message to come whether report has received RS_ESI message to the base station.

With reference to figure 6, if in the ABS of base station updating system information (S601), the then system information (S602) that can send upgrade to relay station through RS_ESI message of base station.

At this moment; The base station can be used in the ascending resource (UL of AAI_MSG-ACK authorizes or ACK authorizes) that sends AAI_MSG-ACK message to the relay station branch, and wherein AAI_MSG-ACK message will be used for the transmission result (S603) to base station report RS-ESI message by relay station.

At this moment, will describe the UL mandate in more detail after a while, promptly ACK authorizes.

The relay station that has successfully received RS_ESI message to send AAI_MSG-ACK message to the base station through the indicated ascending resource of UL authorization message, thereby report has successfully received RS_ESI message (S604) to the base station.

Afterwards; The indicated superframe place of Hyper Frame Number action field that relay station is can be in the lastest imformation of each sub-packet included, according to son divide into groups to carry out to RS-ESI message in be set to the application (S605) of the lastest imformation of ' 1 ' corresponding each sub-packet of bit in the bitmap (S-SFH information bitmap) that comprises.

If do not receive AAI_MSG-ACK message at step S604, then the base station can resend RS_ESI message to relay station.In this case, can carry out before indicated time in the Hyper Frame Number action field and resend.

Hereinafter, with the detailed example that sends the ascending resource (UL of AAI_MSG-ASK authorizes or ACK authorizes) that is used for AAI_MSG-ACK message from the base station to relay station of describing another execution mode according to the present invention.

1) sending ACK through senior map information element (A-MAP IE) authorizes

If ACK authorizes and to comprise and only be used for sending the assignment information of ACK message from relay station (or subordinate relay) to base station (or superordinate relay stations), will the example that be used for from the base station sending to the whole relay stations that are connected with this base station the A-MAP IE of ACK mandate be described with reference to following table 3 so.

Table 3

Title	Size (bit)	Note
			A-MAP IE type	4
Resource begins skew (beginning LRU index)	TBD
			Allocated size	TBD
Long TTI
		1
MCRC					CRC with broadcasting ID mask

Reference table 3 comprises that the MAP IE of ACK authorization message can comprise resource allocation information (that is, beginning skew and allocated size), and this resource allocation information can be used by the whole relay stations that are connected with the base station.In this case, the CRC of map can carry out mask with broadcasting ID.

If specify branch is used in the relay station that sends ACK message, then can use bitmap, and MAP can be represented for this reason by following table 4.

Table 4

Title	Size (bit)	Note
			A-MAP IE type	4
The number of ARS	TBD
			The ARS bitmap	The number of ARS
Resource begins skew (beginning LRU index)	TBD
			Allocated size	TBD
Long TTI
		1
MCRC					CRC with broadcasting ID mask

Reference table 4, the bitmap field that indication is assigned with the relay station of resource is included among the MAP IE.At this moment, the allocation order of each field of bitmap can be according to RSID.

2) use multicast ID through the mandate of A-MAP IE transferring ACK

Hereinafter, the kind of design that is used for distributing to the whole relay stations with specific multicast ID the MAP IE of ACK mandate is described for reference table 5 and table 6.In this case, notice, multicast ID be used for the identical of RS-ESI message.

Table 5

Title	Size (bit)	Note
			A-MAP IE type	4
Resource begins skew (beginning LRU index)	TBD
			Allocated size	TBD
Long TTI
		1
MCRC					CRC with multicast ID mask

Reference table 5 comprise that the MAP IE of ACK authorization message and the MAP IE in the table 3 are similar, but CRC carries out mask with multicast ID.At this moment, relay station can be discerned corresponding M AP IE through MCRC and comprises the ACK authorization message to which multicast ID.

If specify the relay station that is allocated for the resource of sending ACK message, can use bitmap so, and MAP can be represented for this reason by following table 6.

Table 6

Title	Size (bit)	Note
			A-MAP IE type	4
The sum of RS	TBD
			The RS bitmap	The sum of RS
Resource begins skew (beginning LRU index)	TBD
			Allocated size	TBD
Long TTI
		1
MCRC					CRC with multicast ID mask

Reference table 6, the bitmap field that the relay station that is assigned with resource is indicated is included in the MAP IE.At this moment, the allocation order of each field of bitmap can be according to RSID.

Simultaneously, MAP IE can come according to the bitmap of layering the relay station that is assigned with the ACK mandate is indicated.To this content be described with reference to following table 7.

Table 7

Title	Size (bit)	Note
			A-MAP IE type	4
The size of first order bitmap	TBD
			First order bitmap	The size of first order bitmap
For (i=0; Size of (first order bitmap); I++{
			If (first order bitmap [i]==1)
The ARS bitmap	TBD
			}
Resource begins skew (beginning LRU index)	7
			Allocated size	TBD
Long TTI
		1
MCRC					CRC with multicast ID mask

Reference table 7, the MAP IE that is used for the ACK authorized appropriation comprises first order bitmap field and relay station (ARS) bitmap field.

The scope of first order bitmap field indication ARS ID.For example, suppose with 10 to be that unit confirms scope.In this case, if first bit is 1, each bit in the bitmap of relay station representes to have the relay station of ID0bxxxxx0000001 to 0bxxxxx0001010 so.If second bit is 1, each bit in the bitmap of relay station representes to have the relay station of ID 0bxxxxx0001011 to 0bxxxxx0010100 so.

If the bitmap field of relay station is not included among the MAP IE, this can represent that it is assigned to the whole ARS in the respective range so.

And, be used for the ID of beginning relay station and method that the number that is assigned with the relay station that ACK authorizes is indicated in order to indicate being assigned with the relay station that ACK authorizes, can to use.Reference table 8 is described this content.

Table 8

Title	Size (bit)	Note
			A-MAP IE type	4
The open numbering of ARS ID	TBD
			The number of ARS	TBD
Resource begins skew (beginning LRU index)	7
			Allocated size	TBD
Long TTI
		1
MCRC					CRC with multicast ID mask

Reference table 8, the open numbering field of ARS ID and the pdus field of ARS can be included in the MAP IE that is used for the ACK authorized appropriation, so that the relay station that is assigned with the ACK mandate is indicated.

For example, if the open numbering field of ARS ID has value 0bxxxxx0011101, and the pdus field of ARS has value 2, and its indication is the relay station of 0bxxxxx0011101 and 0bxxxxx0011110 to ID with corresponding ACK authorized appropriation so.

Each the included field of A-MAP IE that is used for the ACK authorized appropriation can be included in the predetermined MAC administrative messag.And if before particular moment (timer or duration, for example, next superframe etc.), distribute ACK to authorize to relay station, then relay station can ask to be used for the ascending resource of ACK transmission of messages through random access procedure.In this case, if there is available resource, then relay station can transmit ACK message to base station (or upper-level BTS) through respective resources, and need not to wait for the distribution of carrying out through random access procedure that ascending resource distributes or ACK authorizes.

Hereinafter, with the method that is used to distribute multicast ID and RSID of describing another execution mode according to the present invention.

1)RSID

RSID is used for the interface sign relay station between base station/superordinate relay stations and subordinate relay.Base station/superordinate relay stations can be distributed this RSID during the initial entering process of subordinate relay.At this moment, the ID that is distributed can be the station identifier (STID) of 12 bits.

2) multicast ID

Base station and superordinate relay stations should transmit the SFH information that changes to their subordinate relay.At this moment, can transmit the RS_ESI message of the SFH information that comprises corresponding change according to the multicast pattern to subordinate relay.Correspondingly, base station and superordinate relay stations can be passed through ARS layoutprocedure (that is RS configuration order message) and distribute the multicast ID of whole subordinate relay.

Hereinafter, with the method that is used to distribute multicast ID of more describing another execution mode in detail according to the present invention.

According to this execution mode, the MSB value of x bit with subordinate relay of a multicast ID can be configured to equal the MSB value of the x bit of multicast ID.To this content be described with reference to figure 7.

The example of the method that illustrates according to the present invention another execution mode configuration relay station identifier (RSID) and multicast identifier (multicast ID) of Fig. 7.

With reference to figure 7, suppose that the multicast ID in left side is 111010000000, and x is 5.In this case, the RSID among the corresponding multicast ID is in 111010000001 to 111011111111 scope.And, suppose that the multicast ID on right side is 111100000000, and x is 5.In this case, the RSID of corresponding multicast ID is in 111100000001 to 111101111111 scope.In Fig. 7, the base station distributes ID for each relay station by ascending order.Yet this only is exemplary, and can be according to descending to the distribution of RSID.

Base station and superordinate relay stations can report whether the message (that is RS_ESI message) that transmits through multicast ID is received.In this case; Because base station and superordinate relay stations can identify the quantity of the subordinate relay that exists in the corresponding ID, so they can distribute and the as many ascending resource that is used to report the ACK of corresponding message of the quantity of subordinate relay through RS_ESI message or A-MAP IE.

The configuration of mobile radio station and base station

Hereinafter,, mobile radio station (MS) and femto base station (FBS) will be described as other execution mode of the present invention, through this mobile radio station (MS) and femto base station (FBS) can embodiment of the present invention execution mode.

Mobile radio station is worked as transmitter in up link, and mobile radio station is worked as receiver in down link.And work as receiver in up link in the base station, and work as transmitter in down link in the base station.In other words, each in mobile radio station and the base station can comprise and is used to send and receive information or the transmitter and receiver of data.

Transmitter and receiver can comprise processor, module, parts and/or the unit of execution mode that can embodiment of the present invention.Particularly, transmitter and receiver can comprise and is used for the module (unit) that message is encoded, the antenna that is used for the module that the message of having encoded is decoded and is used to send and receive message.The example of transmitter and receiver will be described with reference to figure 8.

The block diagram of Fig. 8 shows the example of the transmitter and receiver of another execution mode according to the present invention.

With reference to figure 8, the structure of transmitter is represented in the left side, and the structure of receiver is represented on the right side.In the transmitter and receiver each can comprise

antenna

5,10, processor 20,30,

Tx module

40,50,

Rx module

60,70 and memory 80,90.Each element can be carried out and the corresponding function of the function of counterpart.Hereinafter, with each element of more detailed description.

Antenna

5,10 is used for sending the signal that is generated by

Tx module

40,50 to the outside, perhaps receives wireless signal from the outside this wireless signal is sent to

Rx module

60,70.

If support the MIMO function, two or more antennas then can be set.Antenna, Tx module and Rx module can be formed radio frequency (RF) module.

Processor 20,30 is controlled the whole operation of mobile radio station usually.For example, processor 20,30 can carry out the controller function that is used to carry out aforementioned embodiments of the present invention, according to the variable controlled function of medium access control (MAC) frame, handoff functionality, authentication and encryption function of service characteristic and radio wave condition or the like.More specifically, processor 20,30 can be carried out the The whole control of the aforementioned process that is used to carry out transmission/updating system information.

Particularly, the processor of relay station control radio communication module receives RS_ESI message from the base station, and obtains the system information of the renewal of base station, and this information is included in the RS_ESI message.The processor of relay station can use the field of the update time of pointer antithetical phrase grouping, in the corresponding application of regularly in sub-grouped element, carrying out the system information of upgrading.And the processor of relay station can be controlled radio communication module and send AAI_MSG-ACK message to the base station, thereby report has successfully received RS_ESI message to the base station.At this moment, the ascending resource that is used to send AAI_MSG-ACK message can or distribute through the A-MAP IE CRC that carries out mask with scheduled broadcast ID or multicast ID through the MAC administrative messag.

In addition, the processor of relay station can be carried out the The whole control operation to disclosed process in the aforementioned embodiments.

40, the 50 pairs of data of Tx module are carried out predetermined coding and modulation, these data be from processor 20,30 scheduling and be sent to the outside subsequently, will encode then and modulated data are sent to antenna 10.

60,70 pairs of radio signals that receive from the outside through

antenna

5,10 of Rx module are carried out decoding and demodulation, with the recovery initial data, and then institute's data recovered are sent to processor 20,30.

Memory

80,90 can be stored and be used to handle and the program of processor controls 20,30, perhaps can carry out the function that is used for temporarily storing I/O data (ESI information etc.).And;

Memory

80,90 can comprise at least one type in the following type: the memory of flash type, hard disk type, multimedia miniature cards type, Card Type (for example, SD or XD memory), random-access memory (ram), static RAM (SRAM), read-only memory (ROM), Electrically Erasable Read Only Memory (EEPROM), programmable read-only memory (prom), magnetic memory, disk and CD.

Simultaneously; Base station and relay station are used to carry out the controlled function of aforementioned embodiments of the present invention through at least one execution in the aforementioned modules, and OFDM (OFDMA) divides into groups to call, time division duplex (TDD) divides into groups calls and the channel multiplexing function, based on the variable controlled function of medium access control (MAC) frame of service characteristic and radio wave condition; The fastext Real Time Control Function; Handoff functionality, authentication and encryption function are used for the grouping modulation and demodulation function of transfer of data; Grouped channels encoding function and modulated in real time demodulator controlled function perhaps also comprise the independent unit, module or the parts that are used to carry out aforementioned functional fast.

To those skilled in the art, it is apparent that, can realize the present invention with other specific forms, and not break away from spirit of the present invention and substantive characteristics.Thereby top execution mode should all be considered to be exemplary in all fields, rather than restrictive.Scope of the present invention should be confirmed through the reasonable dismissal to accompanying claims, and the whole changes that fall in the equivalency range of the present invention all comprise within the scope of the invention.

Industrial applicability

Execution mode of the present invention can be applicable to various wireless access systems, comprises 3GPP system, 3GPP2 system and/or IEEE 802.xx system.Except these wireless access system, execution mode of the present invention also can be applicable to all technical fields that wireless access system finds its application.

It will be apparent to one skilled in the art that and to come embodiment of the present invention with other ad hoc fashion that is different from the mode that this paper provides, and do not break away from spirit of the present invention and substantive characteristics.Thereby it is exemplary that top execution mode should be interpreted as in all fields, rather than restrictive.Scope of the present invention should be equal to confirm by accompanying claims and jural, rather than confirmed by top description, and the meaning and the institute in the equivalency range that fall into accompanying claims change and all be intended to be encompassed in wherein.To those skilled in the art; Be apparent that the not clear and definite claim of quoting each other can provide with the mode of combination in appended claims, with as illustrative embodiments of the present invention; Subsequent modification after perhaps can being submitted to by application comprise, with as new claim.

Claims

1. method that is used for locating to upgrade at the senior relay station (ARS) of BWA the system information of senior base station (ABS) said method comprising the steps of:

Receive first message from said base station, said first message comprises the information of change of the said system information of said base station;

Send to said base station and to be used for second message that said first message is confirmed; And

Use the information of said change.

2. the method for claim 1; Wherein, Said system information comprises that first son divides into groups, second son divides into groups and the 3rd son divides into groups, and the information of said change comprise the change counting of indicate said system information the change count area, indicate each sub-packet whether as 1 bit be included in said first message bitmap field and with said bitmap field in be set to the lastest imformation of ' 1 ' the corresponding son grouping of bit.

3. method as claimed in claim 2; Wherein, The said lastest imformation of each sub-packet comprises the Hyper Frame Number action field in the units of super-frames; Said Hyper Frame Number action field is indicated the time of the said lastest imformation of using corresponding son grouping, and the step of the information of the said change of execution application divides into groups to carry out according to son at the indicated time place of said Hyper Frame Number action field.

4. the method for claim 1, wherein said first message is under the situation of said changing system information, to receive from said base station.

5. the method for claim 1, wherein said first message is necessary system information (RS_ESI) message of relay station, and said second message is to confirm (AAI_MSG-ACK) message.

6. method that is used for upgrading at BWA senior base station (ABS) system information of senior relay station (ARS) said method comprising the steps of:

Send first message to said relay station, said first message comprises the information of change of the said system information of said base station; And

Receive from said relay station and to be used for second message that said first message is confirmed.

7. method as claimed in claim 6; Wherein, Said system information comprises that first son divides into groups, second son divides into groups and the 3rd son divides into groups; The information of said change comprise the change counting of indicating said system information the change count area, indicate each sub-packet whether as 1 bit be included in said first message bitmap field and with said bitmap field in be set to the lastest imformation that ' 1 ' the corresponding son of bit divides into groups, and

The said lastest imformation of each sub-packet comprises the Hyper Frame Number action field in the units of super-frames, and the time of the said lastest imformation of corresponding son grouping is used in said Hyper Frame Number action field indication.

8. method as claimed in claim 6, wherein, said first message is under the situation of said changing system information, to send.

9. method as claimed in claim 6, said method is further comprising the steps of:

If do not receive said second message, then resend said first message to said relay station from said relay station.

10. method as claimed in claim 6, wherein, said first message is necessary system information (RS_ESI) message of relay station, and said second message is to confirm (AAI_MSG-ACK) message.

11. a senior relay station (ARS) that in BWA, moves, said relay station comprises:

Processor; And

Radio frequency (RF) module, said RF module receive radio signals to outside transmission radio signal and from the outside under the control of said processor,

Wherein, First message that said processor receives through from senior base station (ABS) is obtained the information of change of the system information of said base station; Control second message that is used for said first message is confirmed and be sent out through controlling said RF module, and the information of controlling said change is employed to said base station.

12. relay station as claimed in claim 11; Wherein, Said system information comprises that first son divides into groups, second son divides into groups and the 3rd son divides into groups, and the information of said change comprise the change counting of indicate said system information the change count area, indicate bitmap field that whether each sub-packet comprised as 1 bit and with said bitmap field in be set to the lastest imformation of ' 1 ' the corresponding son grouping of bit.

13. relay station as claimed in claim 12, wherein, the said lastest imformation of each sub-packet comprises the Hyper Frame Number action field in the units of super-frames, and the time of the said lastest imformation of corresponding son grouping is used in said Hyper Frame Number action field indication, and

Wherein, said processor control is located according to the son grouping to the indicated time of said Hyper Frame Number action field that is applied in of the information of said change and is performed.

14. relay station as claimed in claim 11, wherein, said first message is under the situation of said changing system information, to send from said base station.

15. relay station as claimed in claim 11, wherein, said first message is necessary system information (RS_ESI) message of relay station, and said second message is to confirm (AAI_MSG-ACK) message.